PD4-C/-CB USB Online Manual

Saving objects

Note: Improper use of the function can result in it no longer being possible to start the controller. Therefore, carefully read the entire chapter before using the function.
Note:

Objects can be permanently saved via configuration file pd4cfg.txt cfg.txt. The save mechanism described in this chapter can, with this controller, only be used with a NanoJ program or with the Plug & Drive Studio software.

General

Many objects in the object dictionary can be saved and then automatically reloaded the next time the controller is switched on or reset. Furthermore, the saved values are also retained following a firmware update.

Only entire collections of objects (referred to in the following as categories) can be saved together; individual objects cannot be saved.

An object can be assigned one of the following categories:
  • Communication: Parameters related to external interfaces, such as PDO configuration etc.
  • Application: Parameters related to operating modes.
  • Customer: Parameters that are written and read by the customer/user only and are ignored by the controller firmware.
  • Drive: Parameters related to the motor and the sensors (BLDC/Stepper, Closed/Open Loop…). Some are set and saved by auto setup.
  • Tuning: Parameters related to motor and encoder that are set either by auto setup or that can be found in the data sheets, e.g., pole pairs and maximum current.

If an object is not assigned one of these categories, it cannot be saved, e.g., statusword and all objects whose value is dependent on the current state of the controller.

The objects in each category are listed below. In chapter Description of the object dictionary, the corresponding category for each object is also specified.

Category: communication

  • 2028h: MODBUS Slave Address
  • 202Ah: MODBUS RTU Baudrate
  • 202Dh: MODBUS RTU Parity
  • 2102h: Fieldbus Module Control
  • 3502h: MODBUS Rx PDO Mapping
  • 3602h: MODBUS Tx PDO Mapping

Category: application

  • 2033h: Plunger Block
  • 2034h: Upper Voltage Warning Level
  • 2035h: Lower Voltage Warning Level
  • 2036h: Open Loop Current Reduction Idle Time
  • 2037h: Open Loop Current Reduction Value/factor
  • 203Ah: Homing On Block Configuration
  • 203Dh: Torque Window
  • 203Eh: Torque Window Time
  • 2056h: Limit Switch Tolerance Band
  • 2057h: Clock Direction Multiplier
  • 2058h: Clock Direction Divider
  • 205Bh: Clock Direction Or Clockwise/Counter Clockwise Mode
  • 2060h: Compensate Polepair Count
  • 2061h: Velocity Numerator
  • 2062h: Velocity Denominator
  • 2063h: Acceleration Numerator
  • 2064h: Acceleration Denominator
  • 2065h: Jerk Numerator
  • 2066h: Jerk Denominator
  • 2084h: Bootup Delay
  • 2300h: NanoJ Control
  • 2410h: NanoJ Init Parameters
  • 2800h: Bootloader And Reboot Settings
  • 320Ah: Motor Drive Sensor Display Open Loop
  • 320Bh: Motor Drive Sensor Display Closed Loop
  • 3210h: Motor Drive Parameter Set
  • 3212h: Motor Drive Flags
  • 3221h: Analogue Inputs Control
  • 3240h: Digital Inputs Control
  • 3241h: Digital Input Capture
  • 3242h: Digital Input Routing
  • 3250h: Digital Outputs Control
  • 3252h: Digital Output Routing
  • 3321h: Analogue Input Offset
  • 3322h: Analogue Input Pre-scaling
  • 3700h: Following Error Option Code
  • 4013h: HW Configuration
  • 6040h: Controlword
  • 6042h: Vl Target Velocity
  • 6046h: Vl Velocity Min Max Amount
  • 6048h: Vl Velocity Acceleration
  • 6049h: Vl Velocity Deceleration
  • 604Ah: Vl Velocity Quick Stop
  • 604Ch: Vl Dimension Factor
  • 605Ah: Quick Stop Option Code
  • 605Bh: Shutdown Option Code
  • 605Ch: Disable Option Code
  • 605Dh: Halt Option Code
  • 605Eh: Fault Option Code
  • 6060h: Modes Of Operation
  • 6065h: Following Error Window
  • 6066h: Following Error Time Out
  • 6067h: Position Window
  • 6068h: Position Window Time
  • 606Dh: Velocity Window
  • 606Eh: Velocity Window Time
  • 6071h: Target Torque
  • 6072h: Max Torque
  • 607Ah: Target Position
  • 607Bh: Position Range Limit
  • 607Ch: Home Offset
  • 607Dh: Software Position Limit
  • 607Eh: Polarity
  • 6081h: Profile Velocity
  • 6082h: End Velocity
  • 6083h: Profile Acceleration
  • 6084h: Profile Deceleration
  • 6085h: Quick Stop Deceleration
  • 6086h: Motion Profile Type
  • 6087h: Torque Slope
  • 608Fh: Position Encoder Resolution
  • 6091h: Gear Ratio
  • 6092h: Feed Constant
  • 6098h: Homing Method
  • 6099h: Homing Speed
  • 609Ah: Homing Acceleration
  • 60A4h: Profile Jerk
  • 60C1h: Interpolation Data Record
  • 60C2h: Interpolation Time Period
  • 60C4h: Interpolation Data Configuration
  • 60C5h: Max Acceleration
  • 60C6h: Max Deceleration
  • 60F2h: Positioning Option Code
  • 60FEh: Digital Outputs
  • 60FFh: Target Velocity

Category: drive

  • 3202h: Motor Drive Submode Select

Category: tuning

  • 2030h: Pole Pair Count
  • 2031h: Maximum Current
  • 2032h: Maximum Speed
  • 203Bh: I2t Parameters
  • 2050h: Encoder Alignment
  • 2051h: Encoder Optimization
  • 2052h: Encoder Resolution
  • 2059h: Encoder Configuration

Starting the save process

CAUTION:
  • Uncontrolled motor movements!
  • Control may be affected while saving. Unforeseen reactions can result.
  • ► The motor must be at a standstill before starting the saving process. The motor must not be started while saving.
Note:
  • Saving may take a few seconds. Under no circumstances may you interrupt the voltage supply while saving. The state of the saved objects is otherwise undefined.
  • Always wait until the controller has signaled that the save process has been successfully completed with the value "1" in the corresponding subindex in object 1010h.

There is a subindex in object 1010h for each category. To save all objects of this category, the value "65766173h" must be written in the subindex. 1 The controller signals the end of the save process by overwriting the value with a "1".

The following table shows which subindex of object 1010h is responsible for which category.

Subindex Category
01h All categories
02h Communication
03h Application
04h Customer
05h Drive
06h Tuning

Discarding the saved data

If all objects or one category of saved objects is to be deleted, value "64616F6Ch" must be written in object 1011h. 2 The following subindices correspond to a category here:

Subindex Category
01h All categories (reset to factory settings) with the exception of category 06h (Tuning)
02h Communication
03h Application
04h Customer
05h Drive
06h Tuning

The saved objects are subsequently discarded. After the data have been deleted, the controller automatically restarts.

Note: Objects of category 06h (Tuning) are determined by Auto setup and are not reset when resetting to factory settings with subindex 01h (thereby making it unnecessary to again perform an auto setup). You can reset these objects with subindex 06h.

Verifying the configuration

Object 1020h can be used to verify the configuration. It acts as a modification marker similar to common text editors: as soon as a file is modified in the editor, a marker (usually an asterisk) is added.

The entries of object 1020h can be written with a date and time and then saved together with all other savable objects with 1010h:01.

The entries of 1020h are reset to "0" as soon as a savable object (including 1010h:0x,h except for 1010h:01h and 1020h) is written.

The following sequence makes verification possible:
  1. An external tool or master configures the controller.
  2. The tool or master sets the value in object 1020h.
  3. The tool or master activates the saving of all objects 1010h:01h = 65766173h. The date and time in object 1020h are also saved.
After the controller is restarted, the master can check the value in 1020h:01h and 1020:01h. If one of the values is "0", the object dictionary was changed after the saved values were loaded. If the date or time in 1020 does not correspond to the expected value, objects were probably saved with values other than those that were expected.

User memory area 2700h

Up to eight 16-bit values can be saved with object 2700h:02 to 09. This range was created especially for NanoJ programs, e.g., to save configurations.

CAUTION: The motor must be at a standstill during the save process and may not be started up while saving.

Saving is started by writing the value "1" in object 2700h:01. Once saving has been completed, the object is set to "0".

Note:
  • Saving may take a few seconds. Under no circumstances may you interrupt the voltage supply while saving. The state of the saved objects is otherwise undefined.
  • Always wait until the controller has signaled that the save process has been successfully completed with the value "0" in the corresponding subindex in object 2700h:01!
.
1 This corresponds to the decimal of 1702257011d or the ASCII string save.
2 This corresponds to the decimal of 1684107116d or the ASCII string load.
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